Entrance inclosure



y 23, 1933- E. v. LINDSTROM ENTRANCE INCLOSURE Filed Feb. 19, 1.932

ELME/Q V LIIIDSTROM FEE Patented May 23, 1933 UNITED STATES PATENT DFFEQE ELMER V. LINDSTROM, OF JAMESTOWN, NEW YORK, ASSIGNOR TO DAHLSTROM ME- TALLIC DOOR COMPANY, OF JAMESTOWN, NEW YORK, A CORPORATION OF NEW I YonK ENTRANCE INCLOSURE Application filed February 19, 1932. Serial No. 594,023.

This invention relates to an improvement in entrance inclosures and particularly to those having door control or suspension mechanism which it is desired to conceal.

The preferred embodiment of the invention discloses an entrance inclosure preferably arranged for sliding doors having suspension means mounted in the head jamb and concealed from view by an adjustable cover It? plate.

The principal object of the invention lies in the provision of an entrance inclosure adaptable for sliding doors having a vertically adjustable cover plate by which access may be had to the door suspension mechanism.

Another object of the invention lies in the provision of a vertically adjustable inclosure cover plate which may be readily manipulated from the rear of the inclosure structure.

Other and further objects of the invention V" by a v a n n I which is taken in con unetlon with the accompanying drawing, and in which Fig. 1 is a fragmentary rear elevation of one modification of this invention, showing the location of the cover plate with respect to the inclosure structure;

Fig. 2 is a vertical sectional view of the structure shown in Figure 1, being taken substantially on line 2-2 of that figure Fig. 3 is a fragmentary horizontal seetional view taken substantially on line 3-3 of Figure 1, and shows the engagement between the cover plate and the supporting structure of the head jamb;

Fig. 4C is a vertical sectional View similar to Figure 2, showing the forward projecting of the lower portion of the cover plate preparatory to lowering;

Fig. 5 is a further vertical sectional view, showing the cover plate lowered to expose a 45 door suspension mechanism to view; and

Fig. 6 discloses the arrangement of brackets by which the cover plate is supported. Reference is now had to the drawing in K which is disclosed an entrance inclosure structure, generally indicated by the referonce numeral 10. The inclosure shown is arranged to accommodate one or more sliding doors, indicated at 11. The head jamb 12 of the inclosure is formed with a flange 13 which, in conjunction with a plate 14 constitutes a lintel. 'fhe head jamb includes a horizontal flange 16, connected with the lintel flange 13 by a vertical portion 17. The flange 16 terminates in a vertical portion 18. Attached to the portion 18 is a face plate 20, the lower portion 21 of which projects below the horizontal flange 16 and together with flanges l6 and 17 provides a recess 23 in which a door suspension mechanism may be located.

Adjacent the ends of the head jamb and attached to the vertical flange 17, by bolts 24, are brackets 26. Each bracket is formed to provide a flange 27 substantially flush with the face plate 20 and the innerlimit of the inclosure structure. An inwardly directed flange 28 terminates flange 27 and is in turn terminated by a rigidifying flange 29. The flange 28 is arranged with a guide-way or slot 31, which, in the present modification, takes the form of a longitudinally extending opening. The slot is arranged with a substantially central offset portion 32, the center of the olfset being connected with a laterally directed slot 33. The slot 33 is formed with a pocket 34, the purpose of which will subsequently be brought out.

A cover plate 36, with which to inclose the head amb recess 23, comprises a vertical portion 37 which is terminated along the lower edge by an inwardly directed flange 38. Joined to the inner face of the portion 37, adjacent the top of theplate, is a clip 10, the springlike portion 41 of which is engageable with the overhanging portion 21 of the face plate 20, when the cover plate 36 is in the position shown in Figure 2. The purpose of this clip is to prevent objectionable noises occurring through vibration of the cover plate at any time and particularly during operation of the door. Joined to the inner face of the portion 27, and adjacent the vertical edges of the cover plate, are blocks 43. Projecting outwardly from each of the blocks 13 is an arm 44. This arm is bent to parallel the cover plate, being of such length as to project beyond the end thereof in order that it may be received within the guideway 31. It has been found preferable to provide two arms 44 at each vertical end of the cover plate. These arms are of such size as to freely move longitudinally of the guide-way.

It will be noted, (see Figure that when the cover plate is in position to inclose the recess 23, the upper arms 44: lie adjacent the upper end of the guide-ways 31 and the lower arms rest in the pockets izi l of slots 33. Engagement of the clip 4:0, with the overhanging portion 21, as well as the weight of the face plate precludes all possibility of objectionable vibration due to operation of the door.

When it is desired to gain access to the door suspension mechanism'or other control which may be located in the recess 23 above the door '11, the cover plate is raised slightly to disengage the lower arms 44 from the pocket iii. The lower arms on the cover plate may then be withdrawn from slots 38 into the guideway 31. The cover plate may now be dropped and both lower and upper arms as will travel downwardly through the guideway to a position beneath the slot 33. The cover plate, it will be noted, although moved to expose the recess 23 still lies in the same vertical plane that it occupied when in closed position. This arrangement is obviously advantageous when an inclosure structure ot this type is utilized on elevator shaft inclosures where it isessentialthat no part of the inclosure structure overhang or project into the hatchway. To return the'cover plate to closed position, it need merely be raised to a point where the top arms 44 reach the upper end of the guide-ways 81. The lower portion of the cover plate will then drop readily into the slot 33.

Although applicant has shown and described only one modification of his invention, and has shown the cover plate as moving downwardly to expose a door suspension mechanism, it is contemplated to reverse the open and closed positions through the provision of a somewhat higher head jamb. This modification and any others which may be obvious to those skilled in the art are contemplated in so far as they are defined by the hereunto annexed claims.

Having thus set forth my invention what I claim asnew and "for which I desire protection by Letters Patent is:

1. In an entrance .inclosure structure, a head jamb having a recess for receiving a door suspension mechanism, a cover plate inclosing said jamb recess, a bracket joined to said jamb, said bracket being arranged with a generally ver tic'al slot, a second slot -open ing into said vertical slot, guide arms joined to said cover plate and projecting into said vertical slot, one of said arms being engageable with said second slot to retain said cover plate in one extreme position, said one arm being readily removable from said second slot to permit travel of said arms in said vertical slot whereby said cover plate may be moved to the other extreme position.

2. In an entrance inclosure structure, a head jamb having a door hanger recess there in, a bracket joined to said jamb adjacent one end of said recess, said bracket being arranged with two connecting slots, one'perpendiculair'to the other, a plate inclosing said recess, arms on said .plate projecting into one of said slots, one of said arms being engageahle with the other of said slots whereby to support said plate in oneextreme position.

3. In an entrance inclosure structure, a head jamb having a recess therein, a cover plate inclosing said :jamb recess, a bracket joined to said jamb, a guide-way in said bracket, a pair of arms on said cover plate mounted in said guide-way and means forming part of said guide-Way for engaging one of said arms whereby to support said plate in one extreme position.

4. In an entrance inclosure structure having a head jamb, walls defining a recess in said jamb, a face plate joined to said ,jam'b and overhanging said recess, a cover plate for said recess, a clip joined to and forming with said cover plate a pocket for receiving said 'face plate, and cooperating means on said cover plateand said jamb for sustaining saidcover plate ineither open or closed position.

5. In an entrance inclosure structure,- a head :jamb having a recess therein, a slidahle cover plate inclosing said jamb recess, a vertical guide element on said jamb, said element including a guideway having. a laterally'directed central portionya slot opening into said lateral portion, arms on said plate projecting into said gu-idewa'y, said slotserving to engage one of said arms whereby to support said plate when moved to one extreme position.

In testimony whereof I have afiixed my signature.

ELMER V. LINDSTROM; 

